Evolution of the angular velocity as a function of the distance to the center in a 1.3 M_⊙ star. Left panel: evolution of angular velocity for the model 1.3 M_⊙ with different initial velocities. Each curve with different colours refers to a different epoch. The epoch has been indicated in the legend. Evolution of the core and surface and core rotational rates as a function of the gravity for a 1.3 M_⊙ star. Right panel: evolution of the core and surface rotation rates for models with different initial velocities. The grey triangles correspond to red giants in the lower RGB (Gehan et al. 2018). The magenta circles correspond to red giants presented by Mosser et al. (2012) with those grouped around log g ∼ 2.5 in the core-helium-burning phase.